Results 41 to 50 of about 109,951 (269)

RMPCDMD: Simulations of Colloids with Coarse-grained Hydrodynamics, Chemical Reactions and External Fields

open access: yesJournal of Open Research Software, 2017
The RMPCDMD software package performs hybrid Molecular Dynamics simulations, coupling Multiparticle Collision Dynamics to model the solvent and Molecular Dynamics to model suspended colloids, including hydrodynamics, thermal fluctuations, and chemically ...
Pierre de Buyl   +2 more
doaj   +1 more source

Light-activated self-propelled colloids [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
Light-activated self-propelled colloids are synthesized and their active motion is studied using optical microscopy. We propose a versatile route using different photoactive materials, and demonstrate a multiwavelength activation and propulsion.
Paul Chaikin   +5 more
openaire   +4 more sources

Active colloids in harmonic optical potentials (a)

open access: yesEurophysics Letters, 2022
Abstract We study the motion of active Janus colloids in an optical trap using experiments, theory and numerical simulations. To achieve isotropic and harmonic confinement, we prototype microparticles with a nearly uniform refractive index and verify that, in the absence of activity, the confined motion is identical to that of optically ...
I. Buttinoni   +4 more
openaire   +4 more sources

Autonomously Propelled Colloids for Penetration and Payload Delivery in Complex Extracellular Matrices

open access: yesMicromachines, 2021
For effective treatment of diseases such as cancer or fibrosis, it is essential to deliver therapeutic agents such as drugs to the diseased tissue, but these diseased sites are surrounded by a dense network of fibers, cells, and proteins known as the ...
Shrishti Singh, Jeffrey L. Moran
doaj   +1 more source

Self-assembly of Active Colloidal Molecules with Dynamic Function

open access: yes, 2015
Catalytically active colloids maintain non-equilibrium conditions in which they produce and deplete chemicals and hence effectively act as sources and sinks of molecules.
Golestanian, Ramin, Soto, Rodrigo
core   +2 more sources

Preparation and 3D Tracking of Catalytic Swimming Devices [PDF]

open access: yes, 2016
We report a method to prepare catalytically active Janus colloids that "swim" in fluids and describe how to determine their 3D motion using fluorescence microscopy.
Campbell, A., Archer, R., Ebbens, S.
core   +4 more sources

Active colloids in the context of chemical kinetics [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2017
63 pages, 5 ...
Mihail N. Popescu   +4 more
openaire   +5 more sources

Directed assembly of active colloidal molecules

open access: yesNew Journal of Physics, 2019
Having a production line for microrobots is fundamental to their widespread application in many areas. Thanks to their flexibility, active colloidal molecules with dynamic function are a promising model for microrobots.
S Gonzalez, R Soto
doaj   +1 more source

Omnidirectional transport and navigation of Janus particles through a nematic liquid crystal film

open access: yesPhysical Review Research, 2020
We create controllable active particles in the form of metal-dielectric Janus colloids which acquire motility through a nematic liquid crystal film by transducing the energy of an imposed perpendicular AC electric field.
Dinesh Kumar Sahu   +3 more
doaj   +1 more source

Which interactions dominate in active colloids? [PDF]

open access: yesThe Journal of Chemical Physics, 2019
Despite mounting evidence that the same gradients, which active colloids use for swimming, induce important cross-interactions (phoretic interactions), they are still ignored in most many-body descriptions, perhaps to avoid complexity and a zoo of unknown parameters. Here we derive a simple model, which reduces phoretic far-field interactions to a pair-
Benno Liebchen, Hartmut Löwen
openaire   +4 more sources

Home - About - Disclaimer - Privacy